Night air conditioning of buildings by external air ventilation
Buildings contain the environment in which almost all human activities take place, and therefore, nowadays, they represent a great sink of energy. Establishing thermal comfort conditions within these buildings is responsible for a large portion of their energy demand. This paper ai...
| Main Author: | |
|---|---|
| Format: | Online |
| Language: | eng |
| Published: |
Universidad Pedagógica y Tecnológica de Colombia
2018
|
| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/8462 |
| _version_ | 1801706083602923520 |
|---|---|
| author | Bravo-Hidalgo, Debrayan |
| author_facet | Bravo-Hidalgo, Debrayan |
| author_sort | Bravo-Hidalgo, Debrayan |
| collection | OJS |
| description | Buildings contain the environment in which almost all human activities take place, and therefore, nowadays, they represent a great sink of energy. Establishing thermal comfort conditions within these buildings is responsible for a large portion of their energy demand. This paper aims at providing a theoretical framework of the performance and the trends in research and implementation of night air conditioning by outside air ventilation. The bibliographic search was conducted in the academic directory Scopus, and the information extracted was processed in the VOSviewer software, through which text mining, map of terms and networks of investigative action were carried out. The literature showed that direct ventilation has a more significant cooling potential in regions characterized by a high difference between day and night air temperatures. The effectiveness of night cooling and the reliable prediction of thermal behavior are strongly related to the model adopted for the convection algorithm. A reliable prediction of heat transfer by convection requires an approach based on computational simulations of fluid dynamics, which are much more demanding in terms of computational power, compared to simulations of the variation of energy flows as a function of time. Most studies showed that the position of the thermal mass is not significant, while the amount of ventilation air is of great importance. In particular, the energy demand for cooling a building decreases sharply if the air flow rates increase. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-8462 |
| institution | Revista Facultad de Ingeniería |
| language | eng |
| publishDate | 2018 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-84622021-07-13T02:27:22Z Night air conditioning of buildings by external air ventilation Climatización nocturna de edificaciones por ventilación de aire exterior Bravo-Hidalgo, Debrayan efficiency energy strategy thermal comfort text mining confort térmico eficiencia estrategia energética minería de texto Buildings contain the environment in which almost all human activities take place, and therefore, nowadays, they represent a great sink of energy. Establishing thermal comfort conditions within these buildings is responsible for a large portion of their energy demand. This paper aims at providing a theoretical framework of the performance and the trends in research and implementation of night air conditioning by outside air ventilation. The bibliographic search was conducted in the academic directory Scopus, and the information extracted was processed in the VOSviewer software, through which text mining, map of terms and networks of investigative action were carried out. The literature showed that direct ventilation has a more significant cooling potential in regions characterized by a high difference between day and night air temperatures. The effectiveness of night cooling and the reliable prediction of thermal behavior are strongly related to the model adopted for the convection algorithm. A reliable prediction of heat transfer by convection requires an approach based on computational simulations of fluid dynamics, which are much more demanding in terms of computational power, compared to simulations of the variation of energy flows as a function of time. Most studies showed that the position of the thermal mass is not significant, while the amount of ventilation air is of great importance. In particular, the energy demand for cooling a building decreases sharply if the air flow rates increase. Los edificios contienen el entorno en el cual se desarrollan casi la totalidad de las actividades humanas; por ende, estas construcciones representan hoy un gran sumidero de energía. El establecimiento de las condiciones de confort térmico dentro de estos inmuebles es responsable de gran parte de su demanda energética. Ofrecer un marco teórico del desempeño y las tendencias en las investigaciones e implementaciones de la climatización nocturna de edificaciones por ventilación de aire exterior es el objetivo de este trabajo. La contribución se sostiene en una revisión bibliográfica realizada en el directorio académico Scopus. La información extraída de dicho catalogo fue procesada en el software VOSviewer, mediante el cual se realizó la minería de texto, el mapa de términos y las redes de acción investigativa. La ventilación directa tiene un potencial de enfriamiento más significativo en regiones que se caracterizan por una elevada diferencia entre el valor de la temperatura del aire en el día y el de la noche. La efectividad del enfriamiento nocturno y la predicción confiable del comportamiento térmico están fuertemente relacionadas con el modelo adoptado para el algoritmo de convección. Una predicción fiable de la transferencia de calor por convección requiere un enfoque basado en el uso de simulaciones computacionales de dinámica de fluidos, que son mucho más demandantes desde el punto de vista computacional, frente a simulaciones de variaciones de flujos de energía en función del tiempo. En la mayoría de las investigaciones la posición de la masa térmica es poco significativa, mientras que se le da mayor importancia a la cantidad de aire de ventilación. En particular, la demanda de energía para la refrigeración del edificio disminuye fuertemente si las tasas de flujo de aire aumentan. Universidad Pedagógica y Tecnológica de Colombia 2018-05-05 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research investigación application/pdf application/xml https://revistas.uptc.edu.co/index.php/ingenieria/article/view/8462 10.19053/01211129.v27.n48.2018.8462 Revista Facultad de Ingeniería; Vol. 27 No. 48 (2018); 35-47 Revista Facultad de Ingeniería; Vol. 27 Núm. 48 (2018); 35-47 2357-5328 0121-1129 eng https://revistas.uptc.edu.co/index.php/ingenieria/article/view/8462/7135 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/8462/7187 N.A. N.A. |
| spellingShingle | efficiency energy strategy thermal comfort text mining confort térmico eficiencia estrategia energética minería de texto Bravo-Hidalgo, Debrayan Night air conditioning of buildings by external air ventilation |
| title | Night air conditioning of buildings by external air ventilation |
| title_alt | Climatización nocturna de edificaciones por ventilación de aire exterior |
| title_full | Night air conditioning of buildings by external air ventilation |
| title_fullStr | Night air conditioning of buildings by external air ventilation |
| title_full_unstemmed | Night air conditioning of buildings by external air ventilation |
| title_short | Night air conditioning of buildings by external air ventilation |
| title_sort | night air conditioning of buildings by external air ventilation |
| topic | efficiency energy strategy thermal comfort text mining confort térmico eficiencia estrategia energética minería de texto |
| topic_facet | efficiency energy strategy thermal comfort text mining confort térmico eficiencia estrategia energética minería de texto |
| url | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/8462 |
| work_keys_str_mv | AT bravohidalgodebrayan nightairconditioningofbuildingsbyexternalairventilation AT bravohidalgodebrayan climatizacionnocturnadeedificacionesporventilaciondeaireexterior |
